Mit einem Celestron Powerseeker 60AZ-Teleskop und einem iPhone 15 aufgenommen, zeigt dieses beeindruckende Bild Jupiter zusammen mit seinen Galileischen Monden. Das Foto wurde anschließend mit Photoshop Express verfeinert, um seine Klarheit und Detailgenauigkeit zu verbessern.
I don’t see Io and Callisto in this image.
I can see three moons, though I don’t know their names. It appears only one is missing, which might be behind Jupiter.
Io and Europa are often positioned behind Jupiter. My equipment’s resolution isn’t sufficient to identify the third moon you mentioned in the photo.
The three moons are perfectly aligned, as expected. Two are close to Jupiter on either side, and the third is farther out to the lower right. Zoom in to see all three clearly.
I can see it clearly now on my 1024 screen.
That leaves only Io not visible, which could mean it’s either transiting in front or occulted behind Jupiter.
Ganymede has the highest albedo and is larger than Mercury.
Io is particularly interesting—I believe it’s being microwaved as much as tidally squeezed to keep all that allotropic sulfur boiling.
How can you tell which one is Io? Do you identify them by their orbital distance from Jupiter? I can’t make out any distinguishing features of the moons.
Io and Europa are the innermost moons. Europa has a higher albedo than Io, but all three appear similarly bright. The other two moons are simply so large they are unmistakable.
This is an educated guess based on available data, though I may have it reversed and Europa could be the one missing.
I understand that Europa, like Io, undergoes tidal squeezing, which is thought to maintain warmth in its postulated subsurface ocean.